Hey, Joel. Have you been using the standard clear plastic Carlisle/Cambro containers? If so, you should try upgrading to the amber containers. The clear containers are made of polycarbonate which, while it does resist temperature somewhat, is really more well known for its impact resistance. The amber containers are made of a material called
polysulfone, which has a significantly higher temperature resistance and should survive many more cycles in the microwave than the clear plastic containers will.
I work for a restaurant equipment supply company that offers a comprehensive selection of polysulfone containers. You can find them listed here:
jesrestaurantequipment.com/Plastic-Food-Pan-High-Temp_c_2778.html
(New account won't let me include hyperlinks
)
If the polysulfone containers still aren't doing the job, we also offer several Rubbermaid containers (called the "Xtra Hot Food Pan") that are made of a material called Ultem® Resin that sacrifices a bit of impact strength (slightly more likely to break if dropped, crushed, etc.) for an even higher thermal resistance than polysulfone.
Hope that helps, and good luck with your search!
- Hayden
[Edit]: Since this post, we have reorganized the food pan listings on our site a bit. The new link is as follows: jesrestaurantequipment.com/High-Temp-Food-Pans_c_2778.html
<message edited by HaydenFennell on Mon, 08/20/12 8:57 AM>